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What's the difference between using “let” and “var”?

...let keyword was introduced to the language was function scope is confusing and was one of the main sources of bugs in JavaScript. Take a look at this example from another stackoverflow question: var funcs = []; // let's create 3 functions for (var i = 0; i < 3; i++) { // and store them in fun...
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When should I use a struct rather than a class in C#?

When should you use struct and not class in C#? My conceptual model is that structs are used in times when the item is merely a collection of value types . A way to logically hold them all together into a cohesive whole. ...
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How do I change the root directory of an apache server? [closed]

... /etc/apache2/conf/httpd.conf Use your favourite editor (I recommend Vim) and look for the DocumentRoot and change it to /users/spencer/projects. Also look a little further down for a setting that looks like this: <Directory "/var/www"> You will also want to change what is in the quotes to...
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What is the purpose of the implicit grant authorization type in OAuth 2?

...kind of blind spot or what, but I've read the OAuth 2 spec many times over and perused the mailing list archives, and I have yet to find a good explanation of why the Implicit Grant flow for obtaining access tokens has been developed. Compared to the Authorization Code Grant, it seems to just give u...
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How to install both Python 2.x and Python 3.x in Windows

...ws 7, but now I need to use the Python Imaging Library (PIL), ImageMagick, and wxPython, all of which require Python 2.x. 1...
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ReSharper “Cannot resolve symbol” even when project builds

...Try Visual Studio → menu Tools → Options → ReSharper, Suspend button and Resume again (no need to close the window). This works in my case. share | improve this answer | ...
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Why use pointers? [closed]

...tionality, missing data types or for pure perfomance. More below... When and where should I use pointers? Short answer here is: Where you cannot use anything else. In C you don't have any support for complex datatypes such as a string. There are also no way of passing a variable "by reference" ...
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Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign

I make an outer join and executed successfully in the informix database but I get the following exception in my code: 24 ...
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Importing a Maven project into Eclipse from Git

How can I get the effect of choosing to import from both Maven and Git and have Eclipse properly generate my project? 13 A...
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Choosing a stand-alone full-text search server: Sphinx or SOLR? [closed]

I'm looking for a stand-alone full-text search server with the following properties: 5 Answers ...